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Final Four: Stupid pets vs. stupid humans

Stupid pet tricks and stupid human tricks from the “Late Show” with David Letterman are battling it out online in an NCAA-style tournament.

The show selected 16 finalists for the tournament — chosen from nearly 300 pet and human tricks performed over 17 years of the “Late Show.” They put the stupid human tricks on one side of the brackets, the stupid dog tricks on the other.

Online voting determines who progresses to the next round. One vote per day is permitted.

Bailey, above, who we’ve shown you before, is still in the running on the pet side of the brackets. So far Bailey, aka Dog Playing Dead, has beaten out Dog Jumping Rope, and Dog That Says “I love you.”

Meanwhile, on the human side of the brackets, “Woman Spits Gum, Sucks It Back” has advanced through the early rounds and was headed to take on either the “Lady Who Scratches Eyeballs” or “Man Who Squirts Milk Out of Eye.” Here’s a look at the latter:

The championship round will pit the winner on the stupid pet trick side against the winner of the stupid human side, with online voting determining the winner. I’m picking Bailey to go all the way — since voters are choosing their favorite, as opposed to the stupidest. Were they voting for the stupidest, humans would win, hands down.